JPH0613723B2 - Belt-side heat-sealing device for metal powder heat treatment - Google Patents
Belt-side heat-sealing device for metal powder heat treatmentInfo
- Publication number
- JPH0613723B2 JPH0613723B2 JP60208357A JP20835785A JPH0613723B2 JP H0613723 B2 JPH0613723 B2 JP H0613723B2 JP 60208357 A JP60208357 A JP 60208357A JP 20835785 A JP20835785 A JP 20835785A JP H0613723 B2 JPH0613723 B2 JP H0613723B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- seal
- metal powder
- crushed
- hopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000843 powder Substances 0.000 title claims description 33
- 238000007789 sealing Methods 0.000 title claims description 27
- 239000002184 metal Substances 0.000 title claims description 22
- 229910052751 metal Inorganic materials 0.000 title claims description 22
- 238000010438 heat treatment Methods 0.000 title claims description 10
- 239000007789 gas Substances 0.000 claims description 59
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は金属粉末熱処理用ベルト炉の出側シール装置に
関し、粉末治金の原料として使用される鉄系、銅系等の
金属粉末の熱処理の分野で利用される。TECHNICAL FIELD The present invention relates to an outlet side sealing device for a belt furnace for heat treatment of metal powder, and heat treatment of iron-based, copper-based, etc. metal powder used as a raw material for powder metallurgy. Used in the field of.
一般に焼結部品等で使用される金属粉末はベルト炉で脱
酸、脱炭および脱窒等の熱処理をされるが、従来のベル
ト炉の出口側シール装置を第２図および第３図により説
明する。原料の金属粉末は入口側からスチールベルト２
上に装入され、例えばアンモニア分解ガス等の還元性雰
囲気ガス中で５００℃以上に加熱され脱酸、脱炭、脱窒
等の反応が行われた後、水冷ジャケット等の冷却装置に
よって再酸化しない温度まで冷却され、更に炉の出口側
シール装置を通って炉外に排出され、金属粉末の固着し
たケーキ４は破砕機６で粉砕され、スチールベルト２は
出側プーリ８、スナップロール１０を介して炉外を走行
して入口側にもどる。出口側において、炉内雰囲気を大
気からシールするためスチールベルト２上にケーキ４を
乗せたままの状態で上下の圧着ロール１２で圧着し、更
に圧着ロール１２より炉内側にはＮ２ガスなどの不活性
ガス配管１４により不活性ガスを流入している。圧着ロ
ール１２は第３図に示す如くスチールベルト２上のケー
キ４の乗っている部分とその両外側のスチールベルト２
のみの部分も均等にシールする必要があるのでスポンジ
等の弾力性の材料が使用されている。このようなシール
方法では圧着ロール１２そのものが通気性を有してお
り、圧着ロール１２の弾力性が経時的に失われ塑性変形
をきたし、ケーキ４の両端あるいは装入停止後のスチー
ルベルト２のみの通過時には圧着ロール１２の形状が追
随できずシールが不完全となり、また圧着ロール１２の
損耗も激しく、導入不活性ガスも大量を必要とし運転維
持費が高いばかりでなく、時としては導入Ｎ２ガスが脱
酸室に流入し製品性状に悪影響を与える場合もある。Generally, metal powders used in sintered parts and the like are subjected to heat treatment such as deoxidation, decarburization and denitrification in a belt furnace, and a conventional belt furnace outlet side sealing device will be described with reference to FIGS. 2 and 3. To do. The raw material metal powder is steel belt 2 from the inlet side.
After being charged above and heated at 500 ° C or higher in a reducing atmosphere gas such as ammonia decomposition gas to carry out reactions such as deoxidation, decarburization and denitrification, reoxidation by a cooling device such as a water cooling jacket It is cooled to a temperature that does not exist, is discharged to the outside of the furnace through the sealing device on the outlet side of the furnace, the cake 4 to which the metal powder is adhered is crushed by the crusher 6, and the steel belt 2 is driven by the outlet pulley 8 and the snap roll 10. Drive outside the furnace via and return to the entrance side. On the outlet side, in order to seal the atmosphere in the furnace from the atmosphere, the cake 4 is put on the steel belt 2 and pressure-bonded by the upper and lower pressure-bonding rolls 12. Further, N 2 gas or the like is fed inside the pressure-bonding roll 12 inside the furnace. An inert gas is flowing through the inert gas pipe 14. As shown in FIG. 3, the pressure bonding roll 12 is a portion where the cake 4 is placed on the steel belt 2 and the steel belts 2 on both outer sides thereof.
An elastic material such as a sponge is used because it is necessary to evenly seal the only part. In such a sealing method, the pressure-bonding roll 12 itself has air permeability, the elasticity of the pressure-bonding roll 12 is lost over time, and plastic deformation occurs. Only the steel belt 2 at both ends of the cake 4 or after charging is stopped. At the time of passing, the shape of the pressure-bonding roll 12 cannot be followed and the seal is incomplete, and the pressure-bonding roll 12 is severely worn. The 2 gas may flow into the deoxidizing chamber and adversely affect the product properties.
本発明者らはシール性を改善しスポンジロールの損耗を
防止するため実願昭５９−３０９７８を提案した。すな
わち、第４図に示す如く、破砕ケーキ１６は自動開閉ダ
ンパー１８Ａ，１８Ｂ，１８Ｃを有する一室以上のシー
ル室２０，２２，２４でガスシールをされながら炉外に
排出され、スチールベルト２はケーキ４とは別の位置と
異なった方法でシールする方法である。しかしこの装置
では自動開閉ダンパー１８Ａ，１８Ｂ，１８Ｃを交互に
間歇的に頻繁に開閉させる必要があり下記の如き問題点
がある。The present inventors have proposed Japanese Patent Application No. 59-30978 for improving the sealing property and preventing the sponge roll from being worn. That is, as shown in FIG. 4, the crushed cake 16 is discharged to the outside of the furnace while being gas-sealed in one or more seal chambers 20, 22, 24 having automatic opening / closing dampers 18A, 18B, 18C, and the steel belt 2 is This is a method of sealing at a position different from that of the cake 4 and a different method. However, in this device, the automatic opening / closing dampers 18A, 18B, 18C must be alternately and frequently opened / closed, which causes the following problems.
(A)例えばダンパー１８Ｂまたは１８Ｃが開の時はダン
パー１８Ａを閉としてガスをシールしているため、ケー
キがダンパー１８Ａ上にせき止められて、炉からのケー
キ排出が間歇的となるため、後続の粉砕機あるいは篩等
の設備能力を増大しておく必要がある。また、時として
はダンパー１８Ａ上部にケーキがたまった状態で棚吊り
が発生し正常に排出ができない場合が発生する。この問
題を解決するため各ダンパー１８Ａ，１８Ｂ，１８Ｃの
開閉インターバルを短くすると開閉動作の頻度が増加
し、機械的、電気的な装置の損耗が増大する。(A) For example, when the damper 18B or 18C is opened, the damper 18A is closed to seal the gas. Therefore, the cake is stopped on the damper 18A, and the cake is discharged from the furnace intermittently. It is necessary to increase the equipment capacity such as a crusher or a sieve. In addition, sometimes, there occurs a case in which the cake is accumulated on the upper portion of the damper 18A and the rack is suspended, and the discharge cannot be normally performed. If the opening / closing intervals of the dampers 18A, 18B, 18C are shortened in order to solve this problem, the frequency of opening / closing operations increases, and wear of mechanical and electrical devices increases.
(B)第２図、第３図に図示の装置に比べれば、Ｎ２ガス
等の不活性ガス使用量は少ないが、自動供給弁２６より
供給されるＮ２ガスはダンパー１８Ａ開時には炉内側に
流入するため、例えばアンモニア分解ガス等の雰囲気ガ
ス中のＮ２濃度を上昇させ、炉内のＮ２分圧が増加し、
脱窒反応に悪影響を与える。(B) Compared with the device shown in FIGS. 2 and 3, the amount of inert gas such as N 2 gas used is small, but the N 2 gas supplied from the automatic supply valve 26 is inside the furnace when the damper 18A is open. To increase the N 2 concentration in the atmosphere gas such as ammonia decomposition gas and increase the N 2 partial pressure in the furnace,
It adversely affects the denitrification reaction.
本発明の目的は、上記従来技術の問題点を解決し、シー
ル効果にすぐれ連続排出ができる金属粉末熱処理用ベル
ト炉の出側シール装置を提供するにある。An object of the present invention is to solve the above-mentioned problems of the prior art and to provide an outlet side sealing device for a belt furnace for metal powder heat treatment, which has an excellent sealing effect and can be continuously discharged.
本発明の要旨とするところは次の如くである。すなわ
ち、還元性雰囲気において金属粉末をスチールベルトの
上で熱処理する金属粉末熱処理用ベルト炉の出口側シー
ル装置において、前記還元性雰囲気に連通し熱処理され
固着したケーキを破砕し該粉砕ケーキ排出用の第１シー
ルダンパーと前記スチールベルトのシールロールを有す
るシール室と、前記第１シールダンパーの下方に設けら
れた粉砕機と、前記粉砕機の下方に設けられたガスシー
ルホッパーと、前記ガスシールホッパー内に収容された
粉砕金属粉のレベル測定装置と、前記レベル測定装置の
信号に基づき前記ガスシールホッパー内の粉砕金属粉の
レベルが一定になる如く排出する排出制御装置と、前記
ガスシールホッパーの下方に設けられた第２シールダン
パーと、パージ用のＮ２ガス配管、Ｎ２ガス供給用自動
弁、排気ガス配管、排気弁および酸素濃度計と、を有し
て成ることを特徴とする金属粉末熱処理ベルト炉の出側
シール装置である。The gist of the present invention is as follows. That is, in the outlet side sealing device of the belt furnace for metal powder heat treatment that heat-treats metal powder on a steel belt in a reducing atmosphere, the cake that has been heat-treated and adhered to the reducing atmosphere is crushed to discharge the crushed cake. A seal chamber having a first seal damper and a seal roll of the steel belt, a crusher provided below the first seal damper, a gas seal hopper provided below the crusher, and the gas seal hopper A level measuring device for the crushed metal powder contained therein, a discharge control device for discharging the crushed metal powder so that the level of the crushed metal powder in the gas seal hopper becomes constant based on the signal of the level measuring device, and the gas seal hopper a second sealing damper provided below, N 2 gas pipe for purging, N 2 gas supply automatic valve, the exhaust Scan pipe, it made having an exhaust valve and the oxygen concentration meter, the at exit side sealing device for a metallic powder heat treatment belt furnace according to claim.
本発明の詳細を第１図に図示の実施例により説明する。
還元雰囲気に連通したシール室２８は第１シールダンパ
ー３０およびシールロール３２でシールされている。第
１シールダンパー３０の下方には粉砕機３４が設けられ
ている。粉砕機３４の下方にはフレキシブルジョイント
３６を介してガスシールホッパー３８が設けられてい
る。更に、ガスシールホッパー３８の粉砕金属粉のレベ
ル測定装置４０としてのロードセル変換機４１が設けら
れている。また、レベル測定装置４０の信号に基づきガ
スシールホッパー３８の粉砕金属粉を一定レベルで排出
する排出装置４２が設けられている。排出装置４２はガ
スシールホッパー３８内の粉砕粉レベルに応じてオン・
オフするようになっている。The details of the present invention will be described with reference to the embodiment shown in FIG.
The seal chamber 28 communicating with the reducing atmosphere is sealed by a first seal damper 30 and a seal roll 32. A crusher 34 is provided below the first seal damper 30. A gas seal hopper 38 is provided below the crusher 34 via a flexible joint 36. Further, a load cell converter 41 is provided as a level measuring device 40 for crushed metal powder of the gas seal hopper 38. Further, a discharging device 42 for discharging the crushed metal powder of the gas seal hopper 38 at a constant level based on the signal of the level measuring device 40 is provided. The discharge device 42 is turned on according to the level of pulverized powder in the gas seal hopper 38.
It is supposed to turn off.
また、ガスシールホッパー３８の下方には第２シールダ
ンパー４４とフレキシブルジョイント３６が設けられて
いる。A second seal damper 44 and a flexible joint 36 are provided below the gas seal hopper 38.
更にガスシールホッパー３８にはＮ２ガス配管４５、Ｎ
２ガス供給用自動弁４６、第１シールダンパー３０の下
部には排気ガス配管４８、排気弁５０および酸素濃度計
５２が設けられている。また、ガスシールホッパー３８
には粉砕金属粉の上限レベル計５４、下限レベル計５６
が設けられている。Further, the gas seal hopper 38 has an N 2 gas pipe 45, N
An exhaust gas pipe 48, an exhaust valve 50 and an oxygen concentration meter 52 are provided below the two- gas supply automatic valve 46 and the first seal damper 30. Also, the gas seal hopper 38
The upper limit level meter 54 and the lower limit level meter 56 of ground metal powder are
Is provided.
次に本発明の出側シール装置の作用について説明する。
正常の熱処理中は、第１、第２シールダンパー３０，４
４はそれぞれ開で固結したケーキ４は破砕機６で粉砕さ
れ、第１シールダンパー３０を経由して粉砕機３４で粉
砕されフレキシブルジョイント３６を通ってガスシール
ホッパー３８にためられる。ガスシールホッパー３８は
ロードセルで支持されロードセル変換機４１からの信号
によって作動する排出装置４２によって粉砕金属粉のレ
ベルを一定に維持しながら排出し、シールを保つ。ここ
で粉体レベルを制御する手段としてロードセルによる荷
重検出を利用することにより単位時間当り重量増を積分
することにより、粉体レベルを一定に保ちつつ、更にベ
ルト炉の処理量を正確に把握することができる。Next, the operation of the delivery side sealing device of the present invention will be described.
During normal heat treatment, the first and second seal dampers 30, 4
The cakes 4 which are solidified by opening are crushed by the crusher 6, crushed by the crusher 34 via the first seal damper 30, passed through the flexible joint 36, and stored in the gas seal hopper 38. The gas seal hopper 38 is supported by the load cell and is discharged by the discharging device 42 which is operated by a signal from the load cell converter 41 while maintaining the level of the crushed metal powder constant and maintaining the seal. Here, by using the load detection by the load cell as a means for controlling the powder level, the weight increase per unit time is integrated to keep the powder level constant and to accurately grasp the throughput of the belt furnace. be able to.
ガスシールホッパー３８内の粉体レベルを一定に保つ手
段として、上記のロードセル方式と異なる重錘式あるい
は超音波式等の連続レベル計の出力信号を利用して制御
することもできるが、この場合はガスシールホッパー３
８上下のフレキシブルジョイント３６は不要であるが、
ガスシールホッパー３８内の粉体レベルの表面形状の不
規則性が外乱となって、ベルト炉の処理量まで正確に把
握することはできない。As a means for keeping the powder level in the gas seal hopper 38 constant, it is possible to control by using the output signal of a continuous level meter of a weight type or an ultrasonic type, which is different from the above load cell type, but in this case Is a gas seal hopper 3
8 The upper and lower flexible joints 36 are unnecessary,
The irregularity of the surface shape of the powder level inside the gas seal hopper 38 becomes a disturbance, and it is not possible to accurately grasp the throughput of the belt furnace.
また、ガスシールホッパー３８に取付けられた上限レベ
ル計５４および下限レベル計５６はレベル測定装置４０
に対するバックアップ装置で非常用のものであって、上
限レベル計５４が作動時にはベルト炉のライン速度を減
速もしくは停止し、下限レベル計５６が作動時には排出
装置４２を作動して排出量を減らすか排出を停止してガ
スシールホッパー３８を正常レベルに回復させる。Further, the upper limit level meter 54 and the lower limit level meter 56 attached to the gas seal hopper 38 are the level measuring device 40.
Is an emergency backup device for the upper limit level meter 54 that slows or stops the line speed of the belt furnace when the upper limit level meter 54 is operating, and operates the discharging device 42 when the lower limit level meter 56 is operating to reduce or discharge the discharge amount. Is stopped to restore the gas seal hopper 38 to a normal level.
次に、運転開始時には、第１、第２シールダンパー３
０，４４を閉とし、Ｎ２ガス配管４５およびＮ２ガス供
給用自動弁４６よりＮ２ガスを供給し排気ガス配管４８
および排気弁５０を開として、酸素濃度計５２における
酸素濃度が一定値以下になるまでガスシールホッパー３
８および粉砕機３４等の部分をパージする。Next, at the start of operation, the first and second seal dampers 3
The 0,44 are closed, and the N 2 gas is supplied from the N 2 gas pipe 45 and the N 2 gas supply automatic valve 46 exhaust gas pipe 48
Also, the exhaust valve 50 is opened, and the gas seal hopper 3 is operated until the oxygen concentration in the oxygen concentration meter 52 falls below a certain value.
8 and parts such as the crusher 34 are purged.
また、粉砕機３４やフレキシブルジョイント３６の故障
に際しては第１ガスシールホッパー３０を閉として、ベ
ルト炉内の還元雰囲気を維持しながら修理することがで
きる。When the crusher 34 or the flexible joint 36 fails, the first gas seal hopper 30 can be closed and repaired while maintaining the reducing atmosphere in the belt furnace.
運転終了時には、下限レベル計５６が作動した時点で第
１シールダンパー３０を閉とし、Ｎ２ガス供給用自動弁
４６を開としてガスシールホッパー３８、粉砕機５２等
のパージを行う。At the end of the operation, when the lower limit level meter 56 is activated, the first seal damper 30 is closed, the N 2 gas supply automatic valve 46 is opened, and the gas seal hopper 38, the pulverizer 52, etc. are purged.
本発明の出側シール装置では、シール用Ｎ２ガスは連続
運転中は全く不要であり、またベルト炉から粉体抽出が
一定であるので後続装置に対する負荷を均一化すること
ができる。In the outlet-side sealing device of the present invention, N 2 gas for sealing is completely unnecessary during continuous operation, and the powder extraction from the belt furnace is constant, so that the load on the subsequent device can be made uniform.
海綿鉄を原料として還元により粉末治金用還元鉄粉を製
造した。製造装置として第２図および第４図の従来のシ
ール装置を使用したものをそれぞれNO.１、NO.２従来例
とし、第１図の本発明のシール装置を使用したもの本発
明実施例とした。Reduced iron powder for powder metallurgy was produced by reducing sponge iron as a raw material. The manufacturing apparatus using the conventional sealing device of FIGS. 2 and 4 is referred to as the conventional example of NO.1 and NO.2, respectively, and the sealing device of the present invention of FIG. 1 is used. did.
それぞれの操業条件および原料と製品の全炭素量ＴＣ、
金属Fe量（Ｍ．Fe）および全窒素量Ｔ．Ｎ等の分析値お
よび製品圧縮性等を第１表に示した。Each operating condition and total carbon content TC of raw materials and products,
Metal Fe amount (M.Fe) and total nitrogen amount T. Table 1 shows the analytical values such as N and the product compressibility.
第１表から明らかな如く、本発明実施例では、同一の炉
内圧を保つのに必要な雰囲気ガス（アンモニア分解ガ
ス）およびシール用Ｎ２ガス共に従来例に減少し、また
製品の化学分析では、本発明実施例の全窒素量が大幅に
低下し、その結果、圧縮性が著しく向上した。As is clear from Table 1, in the examples of the present invention, both the atmospheric gas (ammonia decomposition gas) and the N 2 gas for sealing required to maintain the same furnace pressure were reduced to the conventional examples, and in the chemical analysis of the products, The total amount of nitrogen in the examples of the present invention was significantly reduced, and as a result, the compressibility was remarkably improved.
本発明は上記実施例からも明らかな如く、ベルト炉の出
口にガスシールホッパーを設け、レベル測定装置の信号
に基づきガスシールホッパーの粉体レベルを一定に維持
しながら粉砕金属粉を連続して排出することにより、次
の成果をあげることができた。As apparent from the above examples, the present invention is provided with a gas seal hopper at the outlet of the belt furnace, and continuously pulverizes the metal powder while maintaining the powder level of the gas seal hopper constant based on the signal of the level measuring device. By discharging it, we were able to achieve the following results.
(イ)ベルト炉からの粉体抽出が連続で変動が少ないので
後続装置の負荷が均一になった。(B) Since the powder extraction from the belt furnace is continuous and has little fluctuation, the load on the subsequent equipment is uniform.
(ロ)還元雰囲気用の雰囲気ガスおよびシール用Ｎ２ガス
の消費量を減少することができた。(B) It was possible to reduce the consumption of the atmosphere gas for the reducing atmosphere and the N 2 gas for sealing.
(ハ)製品の品質を向上することができた。 (C) The quality of the product could be improved.
第１図は本発明の出口シール装置を示す断面図、第２図
は従来の出口シール装置を示す断面図、第３図は第２図
III−III線矢視断面図、第４図は従来の他の出口シール
装置を示す断面図である。 ２……スチールベルト、４……ケーキ ６……破砕機、２８……シール室 ３０……第１シールダンパー、３２……シールロール ３４……粉砕機 ３６……フレキシブルジョイント ３８……ガスシールホッパー ４０……レベル測定装置、４２……排出装置 ４４……第２シールダンパー、４５……Ｎ２ガス配管 ４６……Ｎ２ガス供給用自動弁 ４８……排気ガス配管、５０……排気弁 ５２……酸素濃度計1 is a sectional view showing an outlet sealing device of the present invention, FIG. 2 is a sectional view showing a conventional outlet sealing device, and FIG. 3 is FIG.
Fig. 4 is a sectional view taken along the line III-III, and Fig. 4 is a sectional view showing another conventional outlet sealing device. 2 ... Steel belt, 4 ... cake 6 ... Crusher, 28 ... Seal chamber 30 ... First seal damper, 32 ... Seal roll 34 ... Crusher 36 ... Flexible joint 38 ... Gas seal hopper 40 ...... level measuring device, 42 ...... discharge device 44 ...... second sealing damper, 45 ...... N 2 gas pipe 46 ...... N 2 gas supply automatic valve 48 ...... exhaust gas pipe, 50 ...... exhaust valve 52 ...... Oxygen meter
───────────────────────────────────────────────────── フロントページの続き (72)発明者 武藤 振一郎 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (72)発明者 遠藤 一哉 千葉県千葉市川崎町１番地 川崎製鉄株式 会社技術研究本部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichiro Muto 1 Kawasaki-cho, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Works (72) Inventor Kazuya Endo 1 Kawasaki-cho, Chiba-shi Kawasaki Steel Co., Ltd. Research headquarters
Claims (1)
ベルトの上で熱処理する金属粉末熱処理用ベルト炉の出
口側シール装置において、前記還元性雰囲気に連通し熱
処理され固着したケーキを破砕し該粉砕ケーキ排出用の
第１シールダンパーと前記スチールベルトのシールロー
ルを有するシール室と、前記第１シールダンパーの下方
に設けられた粉砕機と、前記粉砕機の下方に設けられた
ガスシールホッパーと、前記ガスシールホッパー内に収
容された粉砕金属粉のレベル測定装置と、前記レベル測
定装置の信号に基づき前記ガスシールホッパー内の粉砕
金属粉のレベルが一定になる如く排出する排出制御装置
と、前記ガスシールホッパーの下方に設けられた第２シ
ールダンパーと、パージ用のＮ２ガス配管、Ｎ２ガス供
給用自動弁、排気ガス配管、排気弁および酸素濃度計
と、を有して成ることを特徴とする金属粉末熱処理ベル
ト炉の出側シール装置。1. In an outlet side sealing device of a belt furnace for metal powder heat treatment in which a metal powder is heat-treated on a steel belt in a reducing atmosphere, a cake which has been thermally treated and fixed to the reducing atmosphere is crushed and the crushed cake is crushed. A seal chamber having a first seal damper for discharging and a seal roll of the steel belt, a crusher provided below the first seal damper, a gas seal hopper provided below the crusher, and A level measuring device for the crushed metal powder contained in the gas seal hopper, an emission control device for discharging the crushed metal powder in the gas seal hopper so that the level of the crushed metal powder becomes constant based on a signal from the level measuring device, and the gas. a second sealing damper provided below the sealing hopper, N 2 gas pipe for purging, N 2 gas supply automatic valve, exhaust Gas pipe exit side sealing device for a metallic powder heat treatment belt furnace to the exhaust valve and the oxygen concentration meter, characterized by comprising a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60208357A JPH0613723B2 (en) | 1985-09-20 | 1985-09-20 | Belt-side heat-sealing device for metal powder heat treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60208357A JPH0613723B2 (en) | 1985-09-20 | 1985-09-20 | Belt-side heat-sealing device for metal powder heat treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6270501A JPS6270501A (en) | 1987-04-01 |
| JPH0613723B2 true JPH0613723B2 (en) | 1994-02-23 |
Family
ID=16554951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60208357A Expired - Lifetime JPH0613723B2 (en) | 1985-09-20 | 1985-09-20 | Belt-side heat-sealing device for metal powder heat treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613723B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2012649B1 (en) | 2006-05-03 | 2017-07-12 | Cook Medical Technologies LLC | Endoscope rotational and positioning apparatus |
| FR2903607A1 (en) * | 2006-07-12 | 2008-01-18 | Christophe Bastid | INTRA-MOBAL MEDICAL DEVICE |
| JP2008272343A (en) * | 2007-05-07 | 2008-11-13 | Hoya Corp | Mouthpiece for endoscope |
| JP2008272344A (en) * | 2007-05-07 | 2008-11-13 | Hoya Corp | Mouthpiece for endoscope and suction nozzle |
| JP5421051B2 (en) * | 2009-10-08 | 2014-02-19 | 株式会社大川原製作所 | Incineration equipment and incineration equipment operation method |
-
1985
- 1985-09-20 JP JP60208357A patent/JPH0613723B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6270501A (en) | 1987-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4480797A (en) | Installation for treatment of waste metal and liquid dross | |
| JPH08503737A (en) | Method for producing spongy iron briquettes from fine-grained ore | |
| JPH0613723B2 (en) | Belt-side heat-sealing device for metal powder heat treatment | |
| RU2219244C2 (en) | System of unloading of iron produced by a method of its direct reduction | |
| US8057750B2 (en) | High purity magnetite formation process and apparatus, and product thereof | |
| US4188022A (en) | Hot discharge direct reduction furnace | |
| EP3760749A1 (en) | Apparatus for manufacturing hot briquetted iron | |
| CA2034871A1 (en) | Method and apparatus for feeding reacting substances into a smelting furnace | |
| AU703991B2 (en) | Method and arrangement of cooling hot bulk material | |
| CA2408720A1 (en) | Method and device for producing pig iron or liquid steel pre-products from charge materials containing iron ore | |
| US6241804B1 (en) | Process for producing iron briquettes and/or cold iron sponge | |
| FI105207B (en) | Method and apparatus for sintering finely divided material | |
| US3392008A (en) | Production of iron | |
| US6200363B1 (en) | Direct reduced iron hot/cold discharge system | |
| JP3963247B2 (en) | Solidified product manufacturing equipment for grinding sludge | |
| CA1143571A (en) | Method and apparatus for separating insufficiently cooled metal sponge particles from a mass of such particles | |
| AU744597B2 (en) | Method for producing zinc using the is process in an is shaft furnace and corresponding is shaft furnace | |
| US3295952A (en) | Method of making ore briquettes | |
| CA2648094A1 (en) | Shutter mechanism for raw material loading chute of electric furnace | |
| EP0950122A1 (en) | Method for microwave induced oxidation of sulphidic ore material in fluidized bed without sulphur dioxide emissions | |
| US889120A (en) | Apparatus for treating solid material. | |
| JP2007064490A (en) | Atmosphere gas sealing device and atmosphere gas sealing method for belt type heat-treat furnace for metal powder | |
| JP3436006B2 (en) | Reducing atmosphere furnace with hydrogen gas circulation | |
| US793268A (en) | Metal-annealing furnace. | |
| JPS6021759Y2 (en) | Continuous powder reduction furnace |